'git mv' rst resources to md

This is mainly intended to keep the git history as neat as possible.
No actual conversion yet, so now both the rst and the paradox docs
are broken, which will be fixed in the next commits.

akka-docs/rst/scala/code/docs/io/ScalaUdpMulticastSpec.scala

@@ -1,73 +0,0 @@
-/**
- * Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
- */
-
-package docs.io
-
-import java.net.{ Inet6Address, InetSocketAddress, NetworkInterface, StandardProtocolFamily }
-import java.nio.channels.DatagramChannel
-import scala.util.Random
-import akka.actor.{ ActorSystem, Props }
-import akka.io.Udp
-import akka.testkit.TestKit
-import org.scalatest.{ BeforeAndAfter, WordSpecLike }
-import scala.collection.JavaConversions.enumerationAsScalaIterator
-import org.scalatest.BeforeAndAfterAll
-import akka.testkit.SocketUtil
-
-class ScalaUdpMulticastSpec extends TestKit(ActorSystem("ScalaUdpMulticastSpec")) with WordSpecLike with BeforeAndAfterAll {
-
-  "listener" should {
-    "send message back to sink" in {
-      val ipv6ifaces =
-        NetworkInterface.getNetworkInterfaces.toSeq.filter(iface =>
-          iface.supportsMulticast &&
-            iface.isUp &&
-            iface.getInetAddresses.exists(_.isInstanceOf[Inet6Address]))
-
-      if (ipv6ifaces.isEmpty) {
-        // IPv6 not supported for any interface on this platform
-        pending
-      } else {
-        // lots of problems with choosing the wrong interface for this test depending
-        // on the platform (awsdl0 can't be used on OSX, docker[0-9] can't be used in a docker machine etc.)
-        // therefore: try hard to find an interface that _does_ work, and only fail if there was any potentially
-        // working interfaces but all failed
-        ipv6ifaces.exists { ipv6iface =>
-          // host assigned link local multicast address http://tools.ietf.org/html/rfc3307#section-4.3.2
-          // generate a random 32 bit multicast address with the high order bit set
-          val randomAddress: String = (Random.nextInt().abs.toLong | (1L << 31)).toHexString.toUpperCase
-          val group = randomAddress.grouped(4).mkString("FF02::", ":", "")
-          val port = SocketUtil.temporaryUdpIpv6Port(ipv6iface)
-          val msg = "ohi"
-          val sink = testActor
-          val iface = ipv6iface.getName
-          val listener = system.actorOf(Props(classOf[Listener], iface, group, port, sink))
-          try {
-            expectMsgType[Udp.Bound]
-            val sender = system.actorOf(Props(classOf[Sender], iface, group, port, msg))
-            // fails here, so binding succeeds but sending a message does not
-            expectMsg(msg)
-            true
-
-          } catch {
-            case _: AssertionError =>
-              system.log.info("Failed to run test on interface {}", ipv6iface.getDisplayName)
-              false
-
-          } finally {
-            // unbind
-            system.stop(listener)
-          }
-        }
-      }
-
-    }
-  }
-
-  override def afterAll(): Unit = {
-    TestKit.shutdownActorSystem(system)
-  }
-
-}
-